BLACKHAWK! is proud to off a Horizontal Nylon Should Holster series to meet the needs of all your various firearms. Medium Size holsters will fit a shirt size of Medium up to XL. Large Size holsters will fit a shirt size of Large up to XXL. These holsters are lightweight for increased comfort. They also feature and offside plate for adding option accessories, and also have a molded thumb break and non-stretch retention strap.